The 30-year-old actress turned heads when she stepped out flashing a bit of side boob in a black Gucci gown at the Los Angeles’ premiere of Hitchcock on Tuesday night. Co-star Helen Mirren even took notice of Biel’s bust, stopping on the red carpet to admire the actress’ side show.

Biel — who recently got hitched to longtime beau Justin Timberlake in Italy — looked every inch the Hollywood starlet she plays in the film, pairing her ruffled backless gown with a sleek yellow clutch.